On Saturday afternoon, BYU lost to Arizona State 28-23. With the loss, the Cougars lost control of their own destiny to the Big 12 championship game. While BYU's game against Arizona State was winding down, however, Colorado lost to Kansas which opened up BYU's greatly increased BYU's chances to make the Big 12 championship game.

Lassiter is the son of late NFL defensive back Kwamie Lassiter, who played most of his 10 with the Arizona Cardinals. He also has two older brothers, Kwinton and Kwamie II, who played for Kwamie’s alma mater, the University of Kansas. Kwamie II also had an NFL stint with the Cincinnati Bengals.